New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45955 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 102 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                I N T E R F A C E S . C . P O I N T E R S                 --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                            $Revision: 1.6 $
+--                                                                          --
+--          Copyright (C) 1993-2000 Free Software Foundation, Inc.          --
+--                                                                          --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the  contents of the part following the private keyword. --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
+-- for  more details.  You should have  received  a copy of the GNU General --
+-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
+-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
+-- MA 02111-1307, USA.                                                      --
+--                                                                          --
+-- As a special exception,  if other files  instantiate  generics from this --
+-- unit, or you link  this unit with other files  to produce an executable, --
+-- this  unit  does not  by itself cause  the resulting  executable  to  be --
+-- covered  by the  GNU  General  Public  License.  This exception does not --
+-- however invalidate  any other reasons why  the executable file  might be --
+-- covered by the  GNU Public License.                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+generic
+   type Index is (<>);
+   type Element is private;
+   type Element_Array is array (Index range <>) of aliased Element;
+   Default_Terminator : Element;
+
+package Interfaces.C.Pointers is
+pragma Preelaborate (Pointers);
+
+   type Pointer is access all Element;
+
+   function Value
+     (Ref        : in Pointer;
+      Terminator : in Element := Default_Terminator)
+      return       Element_Array;
+
+   function Value
+     (Ref    : in Pointer;
+      Length : in ptrdiff_t)
+      return   Element_Array;
+
+   Pointer_Error : exception;
+
+   --------------------------------
+   -- C-style Pointer Arithmetic --
+   --------------------------------
+
+   function "+" (Left : in Pointer;   Right : in ptrdiff_t) return Pointer;
+   function "+" (Left : in ptrdiff_t; Right : in Pointer)   return Pointer;
+   function "-" (Left : in Pointer;   Right : in ptrdiff_t) return Pointer;
+   function "-" (Left : in Pointer;   Right : in Pointer)   return ptrdiff_t;
+
+   procedure Increment (Ref : in out Pointer);
+   procedure Decrement (Ref : in out Pointer);
+
+   pragma Convention (Intrinsic, "+");
+   pragma Convention (Intrinsic, "-");
+   pragma Convention (Intrinsic, Increment);
+   pragma Convention (Intrinsic, Decrement);
+
+   function Virtual_Length
+     (Ref        : in Pointer;
+      Terminator : in Element := Default_Terminator)
+      return       ptrdiff_t;
+
+   procedure Copy_Terminated_Array
+     (Source     : in Pointer;
+      Target     : in Pointer;
+      Limit      : in ptrdiff_t := ptrdiff_t'Last;
+      Terminator : in Element := Default_Terminator);
+
+   procedure Copy_Array
+     (Source  : in Pointer;
+      Target  : in Pointer;
+      Length  : in ptrdiff_t);
+
+private
+   pragma Inline ("+");
+   pragma Inline ("-");
+   pragma Inline (Decrement);
+   pragma Inline (Increment);
+
+end Interfaces.C.Pointers;